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Finding the Fourth Proportional to 15,102.73, 20,843.63 and 8,817.13

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Solution

The fourth proportional to 15,102.73, 20,843.63 and 8,817.13 is: 12,168.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.73 : 20,843.63 = 8,817.13 : x
  2. Step 2: Convert to fraction form
    15,102.73/20,843.63 = 8,817.13/x
  3. Step 3: Cross multiply
    15,102.73x = 20,843.63 × 8,817.13
  4. Step 4: Simplify right side
    15,102.73x = 183,780,995.38
  5. Step 5: Solve for x
    x = 183,780,995.38/15,102.73
  6. Step 6: Final answer
    x = 12,168.73

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Half scale
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Double scale
Find fourth proportional to 15,103.73, 20,845.01 and 8,818.13
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.